But still, by leaving exclusively UEFI based hardware aside, there is relatively easy way to install PureOS on non-Librem hardware. Please take a look at this PureOS thread: “Your disk has a GPT partition table, for a Linux system to be able to install a bootloader you need to have a “BIOS boot” partition.” This important tip/answer was provided from @mladen, meaning that partition 1 needs to be created as ‘BIOS boot partition’ (ef02), on top of the following ones. In addition, using +32768 number will provide more space (instead of +16384) on/for it.